X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=test%2Futil.py;h=d6b77f9d3c3e90756b087f419cadab49e6b0ba07;hb=60750434fce12e320968a5bbc14cca080048ffd1;hp=6e7e275cddcaca8f56a211c4c4bf447c8f1a6f9d;hpb=0178d52384e0428368f1acf3163e664ecda7b64c;p=vpp.git

diff --git a/test/util.py b/test/util.py
index 6e7e275cddc..d6b77f9d3c3 100644
--- a/test/util.py
+++ b/test/util.py
@@ -1,4 +1,77 @@
+""" test framework utilities """
+
 import socket
+import sys
+from abc import abstractmethod, ABCMeta
+from cStringIO import StringIO
+
+
+def ppp(headline, packet):
+    """ Return string containing the output of scapy packet.show() call. """
+    o = StringIO()
+    old_stdout = sys.stdout
+    sys.stdout = o
+    print(headline)
+    packet.show()
+    sys.stdout = old_stdout
+    return o.getvalue()
+
+
+def ppc(headline, capture, limit=10):
+    """ Return string containing ppp() printout for a capture.
+
+    :param headline: printed as first line of output
+    :param capture: packets to print
+    :param limit: limit the print to # of packets
+    """
+    if not capture:
+        return headline
+    tail = ""
+    if limit < len(capture):
+        tail = "\nPrint limit reached, %s out of %s packets printed" % (
+            len(capture), limit)
+        limit = len(capture)
+    body = "".join([ppp("Packet #%s:" % count, p)
+                    for count, p in zip(range(0, limit), capture)])
+    return "%s\n%s%s" % (headline, body, tail)
+
+
+def ip4_range(ip4, s, e):
+    tmp = ip4.rsplit('.', 1)[0]
+    return ("%s.%d" % (tmp, i) for i in range(s, e))
+
+
+def ip4n_range(ip4n, s, e):
+    ip4 = socket.inet_ntop(socket.AF_INET, ip4n)
+    return (socket.inet_pton(socket.AF_INET, ip)
+            for ip in ip4_range(ip4, s, e))
+
+
+def mactobinary(mac):
+    """ Convert the : separated format into binary packet data for the API """
+    return mac.replace(':', '').decode('hex')
+
+
+class NumericConstant(object):
+    __metaclass__ = ABCMeta
+
+    desc_dict = {}
+
+    @abstractmethod
+    def __init__(self, value):
+        self._value = value
+
+    def __int__(self):
+        return self._value
+
+    def __long__(self):
+        return self._value
+
+    def __str__(self):
+        if self._value in self.desc_dict:
+            return self.desc_dict[self._value]
+        return ""
+
 
 class Host(object):
     """ Generic test host "connected" to VPPs interface. """
@@ -10,20 +83,38 @@ class Host(object):
 
     @property
     def ip4(self):
-        """ IPv4 address """
+        """ IPv4 address - string """
         return self._ip4
 
     @property
     def ip4n(self):
-        """ IPv4 address """
+        """ IPv4 address of remote host - raw, suitable as API parameter."""
         return socket.inet_pton(socket.AF_INET, self._ip4)
 
     @property
     def ip6(self):
-        """ IPv6 address """
+        """ IPv6 address - string """
         return self._ip6
 
+    @property
+    def ip6n(self):
+        """ IPv6 address of remote host - raw, suitable as API parameter."""
+        return socket.inet_pton(socket.AF_INET6, self._ip6)
+
     def __init__(self, mac=None, ip4=None, ip6=None):
         self._mac = mac
         self._ip4 = ip4
         self._ip6 = ip6
+
+
+class ForeignAddressFactory(object):
+    count = 0
+    prefix_len = 24
+    net_template = '10.10.10.{}'
+    net = net_template.format(0) + '/' + str(prefix_len)
+
+    def get_ip4(self):
+        if self.count > 255:
+            raise Exception("Network host address exhaustion")
+        self.count += 1
+        return self.net_template.format(self.count)